Combination dental and surgical tool.



H. A. FARR.

.' COMBINATION DENTAL AND SURGICAL TOOL.

I APPLICATION FILED MAR.25, 1 11. RENEWED JULY 17, 1912. 1,052,374.

Patented Feb. 4, 1913.

ATTORNEYS COLUMBIA PLANDGRAPH Co.,wAsMlNu'mN.n.c.

WEE

HENRY A. FARR, OF NEW YORK, N. Y.

COMBINATION DENTAL AND SURGICAL TOOL.

Application filed. March 25, 1911, Serial No. 616,821.

T 0 (ZZZ whom it may] concern:

Be it known that I, HENRY A. PARR, a citizen of the United States, and aresident of the cit-y of New York, borough of Manhattan, in the countyand State of New York, have invented a new and Improved CombinationDental and Surgical Tool, of which the following is a full, clear, andexact description.

The object of the invention is to provide a new and improved combinationsurgical and dental tool, more especially designed for cuttingsuperfluous flesh, such, for instance, as grows over the wisdom tooth orother part in the mouth of a person, and for readily slitting or cuttingcap crowns preparatory to removing the same whenever it is desired to doso.

For the purpose mentioned, use is vmade of a pair of pivoted handledlevers, provided at their forward ends with coacting knives, of whichone is tubular and the other is in the form of a disk having a shankextending through the opening of the tubular knife to connect with itsown handle.

A practical embodiment of the invention is represented in theaccompanying drawings forming a part of this specification, in whichsimilar characters of reference indicate corresponding parts in all theviews.

Figure 1 is a sectional side elevation of the combination surgical anddental tool in position for cutting the superfluous flesh that has grownover a wisdom tooth; Fig. 2 is aperspective view of the combinationsurgical and dental tool, in position for slitting or cutting the sideof a cap crown; and Fig. 3 is a front elevation of the same.

The pair of handled levers A and B are pivotally connected with eachother by a transverse pivot O, and on the forward end of the lever A issecured or formed a depending tubular knife D through the opening E ofwhich extends a shank F depending from the forward end of the lever Band carrying at its lower end a disk knife G. The disk knife Gpreferably screws on, or is otherwise removably attached to the shank Fso as to permit convenient removal of the disk knife for sharpening andother purposes. The disk knife G is provided at the front with asegmental cutting edge G adapted to coact with the annular cuttingSpecification of Letters Patent.

Patented Feb. a, 1913.

Renewed July 17, 1912. Serial No. 710,057.

edge D of the tubular knife D, the said disk knife G being adapted topass into the opening E at the cutting edge D to insure a shearing cutfor cutting off superfluous flesh H that overlies the wisdom tooth I, asindicated in Fig. 1.

It will be noticed that in using the tool, the cutting edge G of thedisk knife G is passed under the superfluous flesh H at the willfurtherbe noticed that by the arrangement described, the person operated on isnot required to open the mouth very wide, as it is only necessary toopen the mouth sufficiently for the forward end of the lever B wit-h theshank F and disk knife Gr, to pass into proper position for cutting OKthe superfluous flesh.

On the top of the disk knife G are arranged transversely-extendingcutting edges G located at the sides of the front cutting edge G, thesaid cutting edges G and the cutting edge D being adapted to cut or slitthe side of the cap crown J held over a tooth K, as plainly indicated inFigs. 2 and 3. It is understood that in slitting or cutting the side ofa crown, the knives are moved into open position, as indicated in Fig.2, so that one of the cutting edges G engages the bottom edge of thecrown J, while the cutting edge D engages the side of the crown near thetop thereof, and on closing the knives the cutting edges G and D slit orcut the side of the crown so that the crown can be readily removed fromthe tooth K. By having the cutting edges G arranged diametrically asindicated in the drawings, the tool can be used for slit-ting the crownof a tooth in the left or right side of the mouth.

Having thus described my invention, I claim as new and desire to secureby Letters Patent:

1. A combination dental and surgical tool, comprising a pair of pivotedlevers, and knives at the forward ends of the said levers, one of theknives being tubular and the other knife having a segmental cutting edgeadapted to coact with the cutting edge of the tubular knife, and havinga shank extending through the opening in the tubular knife.

2. A combination dental and surgical tool, comprising a pair of pivotedlevers, and knives at the forward ends of the said levers, one of theknives being tubular and the other knife being in the form of a diskhaving a shank extendlng through the opening in the tubular knife, thedisk having on its top a transversely-extending cutting edge adapted tooperate in conjunction with the cutting edge of the tubular knife forslitting the side of a cap crown.

3. A combination dental and surgical tool, comprising a pair of pivotedlevers, a tubular knife at the forward end of one of the said levers, adisk knife having a shank extending through the opening of the saidtubular knife to connect with the forward end of the other lever, thesaid disk knife having a segmental cuttin edge adapted to coact with thecutting ec ge of the tubular knife and adapted to pass into the saidtubular knife.

4. A combination dental and surgical tool, comprising a pair of pivotedlevers, a tubular knife at the forward end of one of the 30 said levers,a disk knife having a shank ex tending through the opening of the saidtubular knife to connect with the forward end of the other lever, thesaid disk knife having a segmental cutting edge adapted to coact withthe cutting edge of the tubular knife and adapted to pass into the saidtubular knife, and a transverse cutting edge on the top of the diskknife to one side of the said segmental cutting edge, the saidtransverse cutting edge operating in conjunction with the cutting edgeof the said tubular knife.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

HENRY A. FARR.

Witnesses:

THEO Gr. Hos'rnn, PHILIP D. ROLLHAUS.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, I). C.

